From old datasheet system DC to DC Converter - Datasheet Reference 2.2mhz Boost DC/DC Converter in SOT-23 1A, 1.2mhz/2.2mhz,
Step-Up DC/DC Converters
in ThinSOT 1A/ 1.2mhz/2.2mhz/ Step-Up DC/DC Converters 1A, 1.2mhz/2.2mhz, Step-Up DC/DC Converters in ThinSOT